heat pumps
Heat pumps typically provide hot water or space heat for heating systems with relatively low supply temperature or can serve as a supplement to other heating technologies. They have become increasingly popular for underfloor heating in buildings in Europe. Economies of scale are less important than for deep geothermal, so there is focus on small household applications with investment costs in Europe ranging from 500-1,600 €/kW for ground water systems and from 1,200-3,000 €/kW for ground source or aerothermal systems.
